Cars and Bikes

The bike fact:
Displacement: 553.00 ccm (33.74 cubic inches)
Engine type: In-line four
Stroke: 4
Power: 50.00 HP (36.5 kW)) @ 8500 RPM
Compression: 9.5:1
Bore x stroke: 58.0 x 52.4 mm (2.3 x 2.1 inches)
Valves per cylinder: 2
Fuel control: DOHC
Cooling system: Air
Gearbox: 6-speed Transmission type
Final drive: Chain
Weight incl. oil, gas, etc: 211.0 kg (465.2 pounds)
Front tyre dimensions: 3.25-19
Rear tyre dimensions: 130/90-16
Front brakes: Dual disc
Rear brakes: Expanding brake
Speed and acceleration
Top speed: 178.0 km/h (110.6 mph)
Other specifications
Fuel capacity: 13.00 litres (3.43 gallons)

The bike condition when I bought it, was acceptable. The mufflers were not original, and some oil leaking from the front fork tubes. The tapped knocking hard, I though it was not a big problem, I can adjust the tapped manually.

The Engine and Electrical.
After regular fluid change, adjust the tapped (thanks to Haynes Manual Book), change the spark plugs, the engine run smoothly. The four cylinders inline engine basically same with Z550 engine, this engine looks very smooth and feels under power under 6000 rpm, and become wild and powerful above that. From 6000 to 9000 rpm was very fast almost instantly. It was very easy to reach 80 mph, and the take a time to reach 100 mph (I haven’t tried the maximum speed). While did the maintenance, I found some wires has been torn and melted, it is normal for more than 10 years old bike, I changed some of them. Few years later this cable become a problems, it was burn. However the burning cable did not effected other component. This bike have no kick starter, so electric starter is the only one crank gear. Up to date, the electric starter still working good.

Handling.
The riding position was superb, and the saddle was very comfort. Medium tall handle bar just fit for touring riding position. The seat height relatively lower than normal bikes, it is good while riding in busy traffic. Although the engine was strong enough to pull up to 100 mph, I like to rides at 50-60 mph, the bike was very comfort at this speed. The dual disc front brake was not impressive, some times it failed to slow down the bike at normal brake distance.